Mobile communication system, mobile station, base station, and packet communication method used therefor

Inactive Publication Date: 2008-04-08
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0016]It is an object of the present invention to provide a mobile communication system, a mobile station, a base station, and a packet communication method u

Problems solved by technology

For this reason, even when the packet reception time is short, the mobile station consumes the po

Method used

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  • Mobile communication system, mobile station, base station, and packet communication method used therefor
  • Mobile communication system, mobile station, base station, and packet communication method used therefor
  • Mobile communication system, mobile station, base station, and packet communication method used therefor

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first embodiment

[0053]The arrangement of the base station according to the present invention will be described next with reference to FIG. 2. Referring to FIG. 2, the base station 1 comprises an antenna 11, a transmission / reception duplexer (DUP) 12 connected to the antenna 11, a receiving section 13 connected to the transmission / reception duplexer 12, a user data separation section 14 connected to the receiving section 13, a packet transmission control section 15 connected to the user data separation section 14, and a state update deciding section 16 connected to the receiving section 13 and packet transmission control section 15.

[0054]The base station 1 also comprises a buffer 17 connected to the packet transmission control section 15 and state update deciding section 16, a signal synthesizing section 18 connected to the buffer 17, and a transmitting section 19 connected to the signal synthesizing section 18, transmission / reception duplexer 12, and state update deciding section 16.

[0055]Known tec...

second embodiment

[0108]Accordingly, in the present invention, the state update deciding section 16 of the mobile station 2 transmits the CQI immediately before a state update frame.

[0109]The state update deciding section 16 of the base station 4 has a priority determination section 16a which determines the mobile station 2 for which the packet transmission priority estimated by the CQI has a predetermined value or less. Since the priority determination section 16a is arranged, the state update deciding section 16 can send a suspend notification to the mobile station 2 for which the packet transmission priority estimated by the CQI has a predetermined value or less.

[0110]In this embodiment, in addition to the effect of the first embodiment of the present invention, the mobile station 2 for which the reception quality of the downlink channel is poor, and a packet is transmitted at a low probability during the current state update frame can be set in the suspend state. Hence, the power consumption of t...

third embodiment

[0111]The arrangement of a base station according to the present invention will be described with reference to FIG. 11.

[0112]A base station 5 according to the third embodiment of the present invention further comprises a CQI error detection section 51 which is connected to a state update deciding section 16 and user data separation section 14. A CQI is sent from the user data separation section 14 to the CQI error detection section 51.

[0113]Except the above point, the remaining components have the same arrangement as that of the base station 1 according to the first embodiment of the present invention shown in FIG. 2. The same reference numerals as in FIG. 2 denote the same constituent elements in FIG. 11. The operations of the same constituent elements except the user data separation section 14 and state update deciding section 16 are the same as in the first embodiment of the present invention.

[0114]The CQI error detection section 51 executes error detection for the CQI from the u...

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Abstract

A mobile communication system includes a base station and a mobile station. The base station includes a transmitting/receiving section that transmits/receives a packet to/from the mobile station. The base station also includes a base station state updating section that notifies the mobile station of transmission/reception state update information that indicates update of a packet receivable state in the mobile station. The mobile station includes a mobile station transmitting/receiving section that transmits/receives the packet to/from the base station. The mobile station also includes a mobile station state updating section that sets, on the basis of the transmission/reception state update information, one of an active state in which the control information for packet transmission can be received and a suspend state in which the control information for packet transmission cannot be received.

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates to a mobile communication system, a mobile station, a base station, and a packet communication method used therefor and, more particularly, to a packet communication method such as an HSDPA (High-Speed Downlink Packet Access) service in a mobile communication system.[0002]Conventionally, in an HSDPA service, DPCHs (Dedicated Physical CHannels) [DL (downlink) / UL (uplink)] are set between a mobile station 102 and a base station 101, as shown in FIG. 26. Referring to FIG. 26, a base station control unit [e.g., an RNC (Radio Network Controller)]103 is connected to the base station 101.[0003]As shown in FIG. 27, the mobile station 102 always receives a 4-CH (channel) HS-SCCH (High Speed Shared Control CHannel) designated from the base station 101. The mobile station 102 detects information of the mobile station ID (identifier) contained in the HS-SCCH and determines whether the ID coincides with the reception mobile station I...

Claims

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Application Information

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IPC IPC(8): H04J3/06H04B7/216H04B7/26H04W28/00H04W48/12H04W52/02H04W72/14H04W88/02
CPCH04W76/046H04W52/0216H04W72/14H04W52/0245Y02B60/50H04W76/27Y02D30/70H04W72/23H04B7/26H04W52/02H04W88/08H04W88/02
Inventor TAKANO, NAHOKOHAMABE, KOJIROTSUMURA, SOICHIMATSUMOTO, MARIKO
Owner NEC CORP
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